Abstract
A medium wavelength infrared (MWIR) staring focal plane array (FPA) technology using Schottky barrier detectors with arrays consisting of 20-micron pixel spacings in a 488 x 640 array format is described. The new 488 x 640 hybrid FPA is a result of an ongoing developmental process that has evolved from a 62 x 58 array to a 488 x 640 array over the past nine years. Reported are the performance goals, design, fabrication, and test results of this high-density hybrid FPA based on PtSi infrared detector technology. The advantages of the hybrid approach include the ease of fabrication, high optical fill factor, compatibility with existing multiplexer technology, and excellent imaging performance. We review past Schottky FPA development and discuss the technical trade-offs of our approach. Also discussed are the design, fabrication, and test results of our most recent Schottky FPA.
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